For your own benefit, try really hard to be free of mil obligations for the entire training training footprint including OE. Try to consolidate if possible, otherwise you'll need to do another sim checkride after 3-4 months.

If you can't do that, then yeah I'd bang out as early in training as possible. Better to start over from scratch than to interrupt your training.

The problem with an interruption is that if it's short enough they can just pick you back up where you left which will not be fun unless you were able to stay very much in the books while on leave. If you subsequently flunk out, you're on probation with no recourse.

They might be kind and accommodating, but if they think you're gaming the system they can just throw you to the wolves. USERRA does not grant you extra remedial training when returning from mil duty, they can simply comply with FAA/AQP rules.